The amount of gold held at Fort Knox has fluctuated over the years. It was at its greatest amount during World War II when several European governments moved their gold reserves to Kentucky for safe keeping. At this time, the amount of gold at Fort Knox peaked at 20,205 metric tons (650 million oz. troy).
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Casey Sander has played Bernadette's father, Mike Rostenkowski, in six episodes of The Big Bang Theory, starting in Season 5. Judd Hirsch has guest starred in two episodes of The Big Bang Theory as Leonard's father, Alfred. Keith Carradine has appeared in three episode as Penny's father, Wyatt, first in Season 4. Katey Sagal, who played the on-screen mother of Kaley Cuoco's character in the 2002-2005 sitcom 8 Simple Rules, has appeared as Penny's mother in one episode of The Big Bang Theory. Jack McBrayer has appeared in one episode of The Big Bang Theory as Penny's brother, Randall. 1  Share on Facebook. 2  Share on Twitter. 3  Share on Google Plus.